[New feature] Support HAR in FILE mode

[hahwul]

Test

./dalfox file ~/222.har --har --proxy http://localhost:8090

 🎯  Target                 /Users/hahwul/222.har
 🏁  Method                 FILE Mode
 🖥  Worker                 100
 🔦  BAV                    true
 ⛏  Mining                 true (Gf-Patterns)
 🔬  Mining-DOM             true (mining from DOM)
 ⏱  Timeout                10
 📤  FollowRedirect         false
 🕰  Started at             2022-06-04 23:47:24.541722 +0900 KST m=+0.087941095

[*] 🦊 Start scan [SID:0] / URL: https://www.hahwul.com/
[I] Found 0 testing point in DOM base parameter mining
...

=> Proxy log